{"title":"用于固态锂金属电池的分子调控聚合物电解质:机理和前景","authors":"Mengnan Shen, Zhiyan Wang, Dongming Cheng, Hang Cheng, Henghui Xu, Yunhui Huang","doi":"10.1016/j.etran.2023.100264","DOIUrl":null,"url":null,"abstract":"<div><p><span><span><span>Solid polymer electrolytes (SPEs) have been widely adopted in solid-state </span>lithium metal batteries (SSLMBs) recently due to their excellent flexibility, superior </span>processability<span><span> and outstanding safety. However, balancing excellent ionic conductivity and mechanical robustness of SPEs is still a bottleneck. Currently, most researches focus on the incorporation of various fillers into </span>polymer matrix to overcome the mentioned obstacle. Nevertheless, the large specific surface area of fillers makes them easy to agglomerate, resulting in uneven dispersion in SPEs, and this would interrupt the continuity of </span></span>lithium ion migration and cause unstable filler/polymer interfaces. Therefore, direct regulation of polymer electrolytes at molecular level instead of incorporating fillers will effectively avoid the above obstacle while obtaining excellent performance. In this review, three kinds of mechanisms of electrolyte regulation at the molecular level are presented, including designing polymer matrix, adding soluble additives, and building molecular interactions. Through molecularly regulating the polymer matrix, constructing three-dimensional (3D) networks, grafting of special functional groups, and coordination interactions in SPEs, the creation of second phases and unstable filler/polymer interfaces are all avoided. It is hoped that this review can inspire an in-depth understanding on direct regulation of SPEs at the molecular level, further improving ionic conductivity and mechanical robustness of SPEs.</p></div>","PeriodicalId":36355,"journal":{"name":"Etransportation","volume":"18 ","pages":"Article 100264"},"PeriodicalIF":15.0000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Molecular regulated polymer electrolytes for solid-state lithium metal batteries: Mechanisms and future prospects\",\"authors\":\"Mengnan Shen, Zhiyan Wang, Dongming Cheng, Hang Cheng, Henghui Xu, Yunhui Huang\",\"doi\":\"10.1016/j.etran.2023.100264\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span><span><span>Solid polymer electrolytes (SPEs) have been widely adopted in solid-state </span>lithium metal batteries (SSLMBs) recently due to their excellent flexibility, superior </span>processability<span><span> and outstanding safety. However, balancing excellent ionic conductivity and mechanical robustness of SPEs is still a bottleneck. Currently, most researches focus on the incorporation of various fillers into </span>polymer matrix to overcome the mentioned obstacle. Nevertheless, the large specific surface area of fillers makes them easy to agglomerate, resulting in uneven dispersion in SPEs, and this would interrupt the continuity of </span></span>lithium ion migration and cause unstable filler/polymer interfaces. Therefore, direct regulation of polymer electrolytes at molecular level instead of incorporating fillers will effectively avoid the above obstacle while obtaining excellent performance. In this review, three kinds of mechanisms of electrolyte regulation at the molecular level are presented, including designing polymer matrix, adding soluble additives, and building molecular interactions. Through molecularly regulating the polymer matrix, constructing three-dimensional (3D) networks, grafting of special functional groups, and coordination interactions in SPEs, the creation of second phases and unstable filler/polymer interfaces are all avoided. It is hoped that this review can inspire an in-depth understanding on direct regulation of SPEs at the molecular level, further improving ionic conductivity and mechanical robustness of SPEs.</p></div>\",\"PeriodicalId\":36355,\"journal\":{\"name\":\"Etransportation\",\"volume\":\"18 \",\"pages\":\"Article 100264\"},\"PeriodicalIF\":15.0000,\"publicationDate\":\"2023-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Etransportation\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2590116823000395\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Etransportation","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2590116823000395","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Molecular regulated polymer electrolytes for solid-state lithium metal batteries: Mechanisms and future prospects
Solid polymer electrolytes (SPEs) have been widely adopted in solid-state lithium metal batteries (SSLMBs) recently due to their excellent flexibility, superior processability and outstanding safety. However, balancing excellent ionic conductivity and mechanical robustness of SPEs is still a bottleneck. Currently, most researches focus on the incorporation of various fillers into polymer matrix to overcome the mentioned obstacle. Nevertheless, the large specific surface area of fillers makes them easy to agglomerate, resulting in uneven dispersion in SPEs, and this would interrupt the continuity of lithium ion migration and cause unstable filler/polymer interfaces. Therefore, direct regulation of polymer electrolytes at molecular level instead of incorporating fillers will effectively avoid the above obstacle while obtaining excellent performance. In this review, three kinds of mechanisms of electrolyte regulation at the molecular level are presented, including designing polymer matrix, adding soluble additives, and building molecular interactions. Through molecularly regulating the polymer matrix, constructing three-dimensional (3D) networks, grafting of special functional groups, and coordination interactions in SPEs, the creation of second phases and unstable filler/polymer interfaces are all avoided. It is hoped that this review can inspire an in-depth understanding on direct regulation of SPEs at the molecular level, further improving ionic conductivity and mechanical robustness of SPEs.
期刊介绍:
eTransportation is a scholarly journal that aims to advance knowledge in the field of electric transportation. It focuses on all modes of transportation that utilize electricity as their primary source of energy, including electric vehicles, trains, ships, and aircraft. The journal covers all stages of research, development, and testing of new technologies, systems, and devices related to electrical transportation.
The journal welcomes the use of simulation and analysis tools at the system, transport, or device level. Its primary emphasis is on the study of the electrical and electronic aspects of transportation systems. However, it also considers research on mechanical parts or subsystems of vehicles if there is a clear interaction with electrical or electronic equipment.
Please note that this journal excludes other aspects such as sociological, political, regulatory, or environmental factors from its scope.